Gin for cotton and all fibrous materials



June 18, 1929. A. LIBERT 1,717,569

GIN FOR COTTON AND ALL FIBROUS MATERIALS Filed July 25, 1927 2 Sheets-Sheet l June 18, 1929. A. LIBERTY GIN FOR COTTON AND ALL FIBROUS MATERIALS Filed July 25, 1927 2 Sheets-Sheet 2 Patented June 1 8, 1929.

UNITED STATES 1,717,569 PATENT for-" lee."

ALFRED LIBERT, or ronEsr-BRussn s, 12 ime 'uin.

em roncor'ron AND ALL FIBROUS MATERIALS.

Application filed July 25, 1927, Serial No. 208,314, and in Belgium ll'ovember 5, 1926.

The present invention relates ,to an improved gin whereby vegetable textiles, especially cotton fibre and tufts, can be freed from their seeds or other waste.

The purpose of saidinventionlies chiefly in the provision of a machine of simple construction, reliable and yielding more than any similar machines known and hitherto used, capable of thoroughly ginning any textile not detrimental to its fibre.

Cotton gins comprising a gin roller, a doctor knife and a beating shaftrotating in a grid-like trough are generally known.

The present invention consists in an improved machine comprising in combination an ordinary gin roller, a spring pressed doctor knife, a beating shaft of polygonal section; each side of the shaft is fitted with a blade or knife and said shaft is surrounded'by a cylindrical grid or perforated drum, having a small longitudinal interruption at the side towards the doctor knife and gin roller; said grid is provided with a hopper for feeding the fibrous material inside the grid. The grid will be advantageously formed of two parts hinged together to allow inspection inside. The beating knives will be fitted with brushing elements, such as metallic brushes, resilient metal blades of leather, cardboard, rubber or the like.

This invention has been illustrated in the accompanying drawings, namely:

Fig. 1 an end elevation of said machine;

Fig. 2 a front elevation of same;

Fig. 3 a plan view of same;

Fig. 4 a diagrammatical sectionupon larger scale of the active parts of the machine;

Fig. 5 a section similar to Fig. 1, showing the blades in reversed position.

The machine consists of a stationary frame 1 whereupon the usual gin roller 2 has been mounted, this roller being covered either with leather or with paper and the like, and having imparted to it a rapid rotatory movement by means of pulley 3 driven by a belt 1. A sheet metal drum perforated at the bottom A, or circular grating 5, has been mounted tangential to said roller 2, and has a small longitudinal interruption 18 at the side towards the doctor knife and gin roller. Inside this drum-like grating 5 and concentrically there to, is located a shaft 6 of polygonal section, each side of which is fitted with a beatingknife 7 fixed to it either in plane or in helical. arrangement and reaching almost as far as the drum-like grating 5. This shaft 6 has imparted to it a'high-speed rotation of direction reverse to that imparted to roller 2, by means of a cable 9. I r

The knives can be, fitted on'one of their pulley 8 driven by a cross belt or sides with a brushing element 19 having me tallic or fibrous brushes, or they can bear a blade 20 of leather, cardboard, rubber and the like; againthey can bear metallic resilient blades as may be necessary for treating spe cial fibrous materials. Thegrid 5 is made of two parts hinged together at 21' so that it can be readily opened for inspection of the knives.

The drivingpulleys are preferably mountedupon the'same shaftlO provided with fast and loose pulleysllr The cotton tufts or flakes are feduninterruptedly'from' an open hopper 12 falling "inside the drumlike grating 5. H

A fixed knife 13 hanging verticallyfrom a standard 14 of the frame, is so positioned as to be exactly tangential to roller2 and fixed drum 5, at their tangential contact, said knife 13 being acted upo n by springs 15. a On the other side, a wooden batten or blade 16 which is hung down from two chains 17 comes into frictional engagement with roller 2. c

Any cotton tufts delivered from the hopper are hit by the beating knives 7 and thrown in such a manner as to glide along grating 5 and then reach the gap or interrupted part of said grating, where they are drawn between roller 2 and fixed knife 13; any seeds thathave come down to the end of this knife and undergone the action of beating knife 7 are pushed and torn away from their fibre by every one of knifes 7 as these pass in sucwards to the seeds completely freed from Y their fibre and to none of the other ones, which latter thus remain in the perforated drum 5 and must revert to the cleaning action of roller 2 and fixed knife 13 until every cotton fibre has been taken off them, prior to which the seeds cannot escape; those freed from fibre are let out over the upper edge of the grating as a result of the centrifugal action of beating knives 7, and they may also escape through the holes of grating 5. i

As to the cotton collected upon the leather surface of roller 2, this isscraped off by the wooden blade 16.

The axes of roller 2 and of shaft 6 are almost on a same level, thus providing for an exact position of the fixed knife 13 .With respect to the beating knives7 and for a maximum operating surface of the roller 2.

Itshould be noted thatthe square-section shaft 6 could be replaced by a hexagonal one or one having any polygonalshape WllitCQVQl',

the number, of sides being thus, at, \vil1,"increased or decreased together With the 'nun ber of knives 7 Wherebythe'numberofoperating points will also be modified.

Therefore, in the present machine, the number of operating points for every one revolution can range between 1 andany figure, so as not to restrict. the 4 number of beating knives 7, i. e. the operating points. I

The efficiency and yield of said machinein correspondence with any given speedwill be thus increased at will:

I claim-:

1. In a gin for cotton andfibrous material,

comprising a ginning roller and :a' spring pressed doctorknife, a beater shaft of polygonal cross section rotating in opposite directlon to theginnlng roller, blades secured to each side of said shaftand adapted nearly to contact the ginningroller, brushing ele ments fitted on one side of said blades, a cylindrical grid surrounding the beating shaft and having a small longitudinal interruption at the side towards the doctor knife and ginning roller and a hopper forming part of said grid for feedingthe fibrous material inside the grid. 7 i

2. In a ginfor cotton and fibrousmaterial,

comprising a ginning roller-and a spring pressed ClOCtOPkIllft-j, awbcater shaft of poly onal cross sect on rotating in opposite dlreci. 1

L-lOIl to the ginning roller, blades secured to each side of said shaftiand adapted nearly to contact theginning roller, brushing elename.

ALFRED LIBERT.

In testimony whereof I signed hereunto my 

